Keystones — Cornerstone
Five GCSE retrieval questions · 16 February 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 57 + 86
Answer: 57 + 86 = 143 -
2. Algebra
Solve: x + 6 = 21
Answer: x = 15 -
3. Geometry
Opposite = 13cm, adjacent = 18cm. Calculate the angle
Answer: 35.8° -
4. Ratio
Simplify the ratio 28:8
Answer: 7:2 -
5. Statistics
Find the mean of: 10, 19, 3, 18, 9
Answer: 11.8